September Weather in Monmouth Beach, United States

Last updated: February 24, 2025

In September, Monmouth Beach showcases a delightful blend of warm and refreshing weather, with maximum temperatures reaching 31°C (87°F) and an average of 21°C (71°F). As the summer wanes, the evenings cool down, dipping to a minimum of 11°C (51°F). This month is marked by 102 mm (4.0 in) of rainfall over approximately 10 days, contributing to a humidity level of 68% that adds a pleasant, coastal feel to the atmosphere. September at Monmouth Beach invites visitors to enjoy the last vestiges of summer while experiencing the transition to fall.

September Temperature in Monmouth Beach

In September, Monmouth Beach experiences a delightful transition as summer fades and autumn begins to unveil its charm. The temperatures showcase a pleasant range, with minimums around 11°C (51°F) and averages peaking at 21°C (71°F), creating a comfortable backdrop for outdoor activities. The days are still warm, with highs reaching 31°C (87°F), inviting visitors to relish the lingering summer vibes. As the month progresses, longer nights usher in cooler evenings, hinting at the crispness that October will bring. This month, characterized by its gentle warmth and gradual cooling, marks a sweet spot for beachgoers and nature lovers alike, blending the best of both seasons.

September Weather in Monmouth Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Monmouth Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363842516070777670624941
Data source: Temperature data for Monmouth Beach generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Monmouth Beach

September in Monmouth Beach brings an average precipitation of 102 mm (4.0 in) over about 10 days, marking a slight decline from the late summer months. With rain spread across the month, this fall transition sees a decrease from the heavier downpours of July and August, both boasting 129 mm. Interestingly, this pattern of fluctuating precipitation is consistent with the earlier months, where April and May also recorded similar rainfall but with more rainy days. As autumn approaches, the wetness begins to ease, hinting at the drier conditions that often follow in October, which tends to see a resurgence in rainfall intensity. This continuity in precipitation trends helps paint a picture of Monmouth Beach's shifting climate from summer to autumn, balancing between moisture and dry spells as the year winds down.

September Precipitation Trends in Monmouth Beach

The chart displays monthly precipitation patterns in Monmouth Beach, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec7812910912412989129126102153100127
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Monmouth Beach

In September, Monmouth Beach experiences a modest humidity level of 68%, marking a slight increase from the drier summer months of July and August, which recorded 62% and 65% respectively. This uptick in humidity is part of a broader seasonal pattern, as the warmer months generally feature lower humidity compared to the year’s peak levels in the winter months like January, where moisture levels soar to 84%. As autumn approaches, the humidity starts to rise again, with October seeing an increase to 74%. This trend highlights the transition from summer to fall, where the comfort level of humidity creates a perfect backdrop for enjoying the scenic views of Monmouth Beach as the leaves change.

September Average Humidity in Monmouth Beach

This chart illustrates the average monthly humidity levels in Monmouth Beach, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Monmouth Beach

In September, Monmouth Beach experiences a UV Index of 8, placing it in the very high exposure category. As summer winds down, the sun's intensity remains significant, with a burn time of just 15 minutes for those unprotected. This trend showcases a gradual decline from the peak UV Index of 10 observed during the height of summer in June and July, but caution is still advised for outdoor activities. With September's UV levels resembling those of April, it’s clear that even as the seasons change, sun protection remains essential. For more detailed information, visit the Monmouth Beach UV Index.

Maximum UV Index Levels in Monmouth Beach for September

The chart shows the monthly maximum UV Index (UVI) for Monmouth Beach in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Monmouth Beach September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Monmouth Beach

As summer gently fades into autumn, September in Monmouth Beach offers a delightful blend of warmth and golden sunlight, boasting an impressive 282 hours of sunshine. This radiant month showcases a gradual decline from the sun-drenched days of July and August, which both recorded over 320 hours. Despite this decrease, September still shines brightly, reminding us of the lingering warmth before fall takes hold. Notably, this month stands out as a refreshing transition, following June's peak at 325 hours, and leads into October, which sees a further drop to 232 hours. With each sunset, the landscape transforms, creating vibrant scenes that perfectly capture the essence of an enchanting coastal autumn.

Monthly Sunshine Duration in Monmouth Beach: September Highlighted

The September sunshine duration represents the total number of hours Monmouth Beach experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec153h182h257h249h287h325h353h323h282h232h217h180h
Data source: Monmouth Beach September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Monmouth Beach During September

In September, Monmouth Beach basks in a 48% chance of sunny weather, placing it among the more favorable months for sun-seekers, particularly as summer wanes. This slight increase in sunshine compared to August's lower 30% chance signifies a seasonal transition, where the warmth of summer still lingers but begins to give way to the crispness of autumn. Interestingly, March leads the pack with a 56% chance of sun, while November's 55% hints that the coastal charm persists even as the year winds down. Overall, as September ushers in a mellowed warmth and brighter days, it stands as an appealing time for outdoor activities in this coastal haven.

Percentage of Sunny Days in September in Monmouth Beach

The chart illustrates the percentage of sunny days in Monmouth Beach throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Monmouth Beach experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%30%56%46%44%38%46%30%48%41%55%32%
Data source: Monmouth Beach September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Monmouth Beach in September

As summer comes to a close in Monmouth Beach, September greets residents with approximately 12 hours of daylight, marking a gentle transition towards shorter days. This gradual decline follows a peak in summer when daylight reached a maximum of 14 hours in June through August. While the days are still long enough to enjoy the beautiful early fall, the shift is notable as daylight begins to taper off, foreshadowing the 11 hours expected in October. This pattern reflects a natural rhythm, as the vibrancy of summer gives way to the cozy ambiance of autumn, reminding us to savor each lingering hour of sunlight before winter sets in.

Average Daylight Hours in Monmouth Beach for September

The chart illustrates the variation in daylight duration in Monmouth Beach throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 39m10h 40m11h 58m13h 18m14h 25m14h 58m14h 40m13h 40m12h 24m11h 5m9h 55m9h 20m
Data source: Monmouth Beach daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Monmouth Beach

As September ushers in the fall season in Monmouth Beach, the average wind speed picks up slightly to 4.2 m/s (9 mph), marking a departure from the calmer breezes of summer months, which lingered at 3.4 m/s (8 mph) in both July and August. This gentle uptick reflects a broader trend of increasing wind speeds as the year progresses into autumn; preceding months, from the spring's 4.5 m/s (10 mph) in April to a peak of 5.2 m/s (12 mph) in February, showcase a gradual ebb and flow of wind, hinting at the seasonal shifts. As nature transitions, September’s winds offer a refreshing reminder of the changing tides, encouraging beachgoers to savor the lingering warmth before winter's chill sets in.

Average September Wind Speed in Monmouth Beach

The chart displays monthly wind speed patterns in Monmouth Beach, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.15.25.14.54.33.93.43.44.2 m/s4.64.84.4
Data source: Monmouth Beach September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Monmouth Beach Compares to Other Months

The weather in Monmouth Beach changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Monmouth Beach and find detailed weather information for every month.

September typically boasts much warmer temperatures compared to January, with averages ranging from a minimum of 11°C (51°F) to a pleasant maximum of 31°C (87°F). In contrast, January experiences a much colder climate, with temperatures dropping to a minimum of -15°C (5°F) and reaching a maximum of only 18°C (64°F). While September sees a substantial amount of precipitation at 102 mm (4.0 in) over about 10 days, January is slightly drier with 78 mm (3.1 in) over 9 days. Additionally, January tends to have higher humidity levels at 84%, compared to September's 68%. For those interested in specific January conditions, check out Monmouth Beach weather in January.

September and February present strikingly different weather patterns. In September, temperatures range from a mild 11°C (51°F) at night to a warm 31°C (87°F) during the day, with an average of 21°C (71°F). The month experiences around 102 mm (4.0 in) of precipitation over approximately 10 days, accompanied by a relatively comfortable humidity level of 68%. In contrast, February brings a much colder climate, with temperatures plummeting to a minimum of -14°C (6°F) and an average of just 4°C (39°F). The maximum temperature reaches a more moderate 20°C (67°F), while precipitation increases to 129 mm (5.1 in) over about 12 days, with a higher humidity level of 82%. For more detailed information on the weather during this chilly month, you can check out Monmouth Beach weather in February.

September and March present a stark contrast in weather conditions. In September, temperatures range from a mild 11°C (51°F) at minimum to a warm 31°C (87°F) at maximum, with an average of 21°C (71°F). The month sees a total precipitation of 102 mm (4.0 in) across about 10 days, accompanied by a humidity level of 68%. In contrast, March experiences much colder temperatures, with a minimum of -8°C (18°F) and a maximum of 23°C (74°F), averaging only 6°C (43°F). This month also has slightly higher precipitation at 109 mm (4.3 in) over 11 days, and increased humidity at 81%. For a deeper look at weather patterns during this time, check out Monmouth Beach weather in March.

When comparing the weather in September and April, several notable differences emerge. September typically boasts warmer temperatures, with a minimum of 11°C (51°F) and an average high reaching 31°C (87°F), while April experiences cooler conditions, starting from 0°C (32°F) and averaging a maximum of 26°C (80°F). Precipitation levels are also notable; September sees 102 mm (4.0 in) over approximately 10 days of rain, whereas April has a slightly higher total of 124 mm (4.9 in) over about 12 days. Additionally, the humidity in April is higher at 78%, compared to 68% in September. For a more detailed look at April weather specifics, visit Monmouth Beach weather in April.

When comparing the weather in September and May, one can observe distinct differences in temperature and precipitation. September tends to be warmer, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 31°C (87°F), while May experiences cooler temperatures, averaging between 3°C (37°F) and 29°C (85°F). Additionally, September has slightly less precipitation, totaling 102 mm (4.0 in) over approximately 10 days compared to May's 129 mm (5.1 in) across 13 days. Both months exhibit similar humidity levels, with September at 68% and May at 69%. For a closer look at May's weather specifics, you can check Monmouth Beach weather in May.

In comparing the weather of September and June, we see that both months have similar average temperatures, with September ranging from a minimum of 11°C (51°F) to a maximum of 31°C (87°F), while June varies from 10°C (51°F) to 31°C (88°F). Precipitation is slightly higher in September, with 102 mm (4.0 in) over 10 rainy days compared to June's 89 mm (3.5 in) across 11 days. Humidity levels are also comparable, with September at 68% and June at 69%. For a detailed look at the weather during June, check out Monmouth Beach weather in June.

In comparing the weather of September and July, we can observe distinct differences in temperature and precipitation patterns. September experiences cooler temperatures, with a minimum of 11°C (51°F) and a maximum of 31°C (87°F), while July typically has warmer conditions, featuring a minimum of 17°C (63°F) and a maximum of 34°C (93°F). Additionally, September receives about 102 mm (4.0 in) of precipitation over an average of 10 days, which is slightly less than July's 129 mm (5.1 in) over 13 days. Humidity levels are slightly higher in September at 68% compared to July's 62%. For more detailed information about July weather, you can check Monmouth Beach weather in July.

When comparing the weather in September to August, it's clear that September brings cooler temperatures, with a minimum of 11°C (51°F) compared to August's warmer minimum of 17°C (63°F). The average temperature in September is 21°C (71°F), slightly lower than August's 24°C (76°F). While both months experience high temperatures, the maximum in September reaches 31°C (87°F), just a degree shy of August's peak of 32°C (89°F). Precipitation is more frequent in August, with 126 mm (4.9 in) falling over 14 days, whereas September sees less at 102 mm (4.0 in) over 10 days. Humidity levels are a bit higher in September at 68%, compared to August’s 65%. For a detailed overview, you can check Monmouth Beach weather in August.

In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 31°C (87°F), averaging around 21°C (71°F), with moderate humidity at 68%. This month typically experiences around 102 mm (4.0 in) of precipitation over about 10 days, making it a relatively warm and humid time of year. In contrast, October sees a drop in minimum temperatures to 4°C (40°F) and an average of 17°C (62°F), although it can reach up to 32°C (89°F) at times. Precipitation increases to 153 mm (6.0 in) over 12 days, and humidity rises slightly to 74%, which contributes to a more autumnal feel compared to September. For more detailed weather information, check out Monmouth Beach weather in October.

September and November present contrasting weather patterns. In September, temperatures are generally warmer, ranging from a low of 11°C (51°F) to a high of 31°C (87°F), with an average of 21°C (71°F). This month also experiences a good amount of rainfall, with 102 mm (4.0 in) over approximately 10 days and a humidity level of 68%. In stark contrast, November sees much cooler temperatures, with minimums dropping to -7°C (20°F) and an average of only 9°C (49°F), while the maximum reaches 22°C (72°F). Precipitation remains consistent at 100 mm (3.9 in) over the same number of days, but with a higher humidity level of 82%. For those interested in more specifics regarding November weather patterns, you can visit Monmouth Beach weather in November.

September and December showcase contrasting weather patterns. In September, temperatures typically range from a mild 11°C (51°F) at night to a warm 31°C (87°F) during the day, with an average of 21°C (71°F). The month experiences about 102 mm (4.0 in) of precipitation across 10 days and a humidity level of 68%. In contrast, December brings a chillier climate, with temperatures dropping to a minimum of -10°C (15°F) and peaking at 18°C (64°F), averaging around 5°C (41°F). This month sees higher precipitation levels of 127 mm (5.0 in) over the same number of days, while humidity rises to 80%. For more details on December weather, check out Monmouth Beach weather in December.

Compare Monmouth Beach's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Monmouth Beach

As summer transitions into autumn, September in Monmouth Beach showcases pleasant warmth with a comfortable average temperature, making it a delightful time for outdoor activities. However, this month also brings a notable increase in precipitation, with occasional rainy days dampening the sunshine and adding humidity to the air. While the mornings can feel crisp, afternoons often deliver a hint of summer's lingering heat, creating an inviting climate for those seeking a balance between sun and shade. For a deeper understanding of the seasonal shifts, you can explore more at Monmouth Beach Climate.